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Selected Quarterly Financial Information (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2012 | Sep. 30, 2012 | Jun. 30, 2012 | Mar. 31, 2012 | Dec. 31, 2011 | Sep. 30, 2011 | Jun. 30, 2011 | Mar. 31, 2011 | Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
Selected Quarterly Financial Information (unaudited) |  |  |  |  |  |  |  |  |  |  |
Net sales | $ 106,849 | $ 132,715 | $ 136,547 | $ 139,909 | $ 191,685 | $ 267,959 | $ 264,815 | $ 254,676 | $ 516,020 | $ 979,135 | $ 930,892
Gross profit | 38,727 | 49,884 | 61,254 | 65,268 | 83,088 | 124,934 | 135,349 | 130,963 | 215,133 | 474,334 | 449,485
Income (loss) from continuing operations, net of income taxes | (8,642) | 7,698 | 11,011 | 16,462 | 23,588 | 52,617 | 56,318 | 57,979 | 26,529 | 190,502 | 277,176
(Loss) income from discontinued operations, net of income taxes | (413) | 4,055 | 807 | (50) | (3,312) | (16,754) | (37,112) | (5,337) | 4,399 | (62,515) | 84,584
Net income | $ (9,055) | $ 11,753 | $ 11,818 | $ 16,412 | $ 20,276 | $ 35,863 | $ 19,206 | $ 52,642 | $ 30,928 | $ 127,987 | $ 361,760
Basic: |  |  |  |  |  |  |  |  |  |  |
Continuing operations (in dollars per share) | $ (0.22) | $ 0.20 | $ 0.29 | $ 0.43 | $ 0.62 | $ 1.34 | $ 1.37 | $ 1.46 | $ 0.69 | $ 4.80 | $ 7.02
Discontinued operations (in dollars per share) | $ (0.01) | $ 0.10 | $ 0.02 |  | $ (0.09) | $ (0.43) | $ (0.90) | $ (0.14) | $ 0.11 | $ (1.57) | $ 2.14
Income (in dollars per share) | $ (0.23) | $ 0.30 | $ 0.31 | $ 0.43 | $ 0.53 | $ 0.91 | $ 0.47 | $ 1.32 | $ 0.80 | $ 3.23 | $ 9.16
Diluted : |  |  |  |  |  |  |  |  |  |  |
Continuing operations (in dollars per share) | $ (0.22) | $ 0.20 | $ 0.28 | $ 0.42 | $ 0.61 | $ 1.31 | $ 1.31 | $ 1.36 | $ 0.68 | $ 4.63 | $ 6.52
Discontinued operations (in dollars per share) | $ (0.01) | $ 0.10 | $ 0.02 |  | $ (0.09) | $ (0.41) | $ (0.86) | $ (0.12) | $ 0.11 | $ (1.52) | $ 1.99
Income (in dollars per share) | $ (0.23) | $ 0.30 | $ 0.30 | $ 0.42 | $ 0.52 | $ 0.90 | $ 0.45 | $ 1.24 | $ 0.79 | $ 3.11 | $ 8.51
Weighted average shares outstanding: |  |  |  |  |  |  |  |  |  |  |
Basic (in shares) | 38,698 | 38,577 | 38,370 | 38,261 | 38,212 | 39,335 | 40,998 | 39,842 | 38,477 | 39,658 | 39,499
Diluted (in shares) | 38,698 | 39,169 | 38,988 | 38,863 | 38,771 | 40,069 | 43,002 | 42,531 | 39,051 | 41,155 | 42,514

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